Process of manufacturing soap



(No Model.) 2 Sheets-Sheet 1.

, W. A. GRANT.

PROCESS OPMANPAGTURPNG SOAP;

No. 471,668. Patented Mar. 29, 1892l (No Model.) 2 Sheets-Sheet 2.

' W. A. GRANT.

PROCESS 0F MANUFACTURING SOAP.

No. 471,668. u Patented Mar. 29, 1892.

UNITED STATES PATENT OFFICE.

VILLIAM A. GRANT, OF HOUSTON, TEXAS.

PROCESS oF MANUFACTURING soAP.

SPECIFICATION forming part of Letters Patent No. 471,668, dated March 29, 1892.

Application tiled January 28, 1890. Serial No. 338,401. (No specimens.)

T0 cir/ZZ whom it may concern:

Be it known that I, WILLIAM A. GEANT, a citizenof the United States, and a resident of Houston,in the county of Harris and State of Texas, have invented a new and Improved Process of Manufacturing Soaps, of which the following is a full, clear, and exact description.

The object of myinvention is to lessen the time required for the manufacture of soaps and at the same time have all portions of a mass thereof of uniform character, also to make more soap from the same amount of fat or oils than is now done by the ordinary processes.

In carrying out my invention I may make use of the mechanism shown in the drawings, in Which- Figure l represents a side view of the apparatus, and Fig. 2 represents a view at right angles to Fig. I.

Similar letters represent similar parts both iigures. y

The apparatus shown in the drawings is substantially that shown in an application for Letters Patent tiled by me of even date herewith and bearing Serial No. 338,400, and a description thereof is not deemed necessary, other than an explanation of such parts as more immediately refer to the invention herein set forth.

A representsa mixing-box having a removable lid B, provided with an oblong funnel O, having a narrow opening` in its bottom.

D represents the rotary mixer-shafts with transverse blades b, the side mixer-shafts having gearing meshing with asmaller gearing on the center mixer-shaft, whereby the shafts lnay be rotated in dierent directions and at different rates of speed.

E represents an elevated tank, from which the liquefied caustic soda is run by means of a flexible pipe or hose F into the funnel C.

In carrying out my process the iirst operation consists in running as much fat, Grease, or oil as may be required into a mixing or cooling frame from a suitable melting-tank, the said fats being melted at a temperature from 100o to 125 Fahrenheit. The cooling-frame is then placed under the mixing-machineand the triple blades are then lowered into position. The topand funnel are then placed on the cooling-frame, when the mixing-machine is put into motion ata high or low rate of speed, as the case may require. Then the caustic soda is run through the hose-pipe on the fats contained in the cooling-frame through the opening in the funnel, the noz- Zie being moved from end to end of the funnel until a sufficient quantity is sprayedinto the fats or oils, when, owing` to the constant agitation of the latter by the mixing-blades, all portions of the said fats are brought into immediate contact with the caustic soda and other compounds and converted readily into soap. By spraying the liquid it is more uniformly distributed through the fats and does not, as it would if poured in or permitted to fall in-a stream on the same spot, as is the usual practice, eat or cut its way to the bottom of the frame without being thoroughly brought in Contact with every portion ot' the y grease. When the proper mixingis effected, which is accomplished in ashort time, (about twelve to fifteen minutes,) the mixer shafts and blades are raised out of the frame, and the frame-now a cooler-frame-is moved, so that another mixing-frame may take its place.

The mixed mass or soap is then cooled in the,

same frame without being disturbed, thereby preventing loss or waste of material.

yWhat I desire to claim as my invention and secure by Letters Patent is The herein-described process of making soap, consisting in placing oils and other fatty ingredients unitedly or individually in a melted but unboiled condition Within a .receptacle, incorporating the necessary compounds in said mixture, agitating the combined mass in different directions and at different speeds by regulated mechanical devices, spraying liquid lcaustic soda over the surface of the mass While agitating the saine, removing said agitating devices, and allowing the mass to cool Without removing it from the receptacle, substantially as set forth.

WM. A. GRANT. Titnessesz E. C. CRAWFORD, C. W. ALsWoRTH. 

